第26题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. He has lost his history book. B. He doesn’t like the history course. C. He has to read a lot of history books. D. He finds history books difficult to understand. 参考答案:C 答案解析:[听力原文]
W: Why are you so tired and upset
M: I’ve been taking the history course this term. But th
第27题: [单项选择]剧烈运动时的生理反应错误的是 A. 交感神经活动增强 B. 肾上腺素分泌增加 C. 肾血管收缩 D. 肝血流量减少 E. 肾血流量增加 参考答案:E 答案解析:剧烈运动时机体通过反射使交感神经活动增强,肾血管收缩,肾血流量减少,使血液转移到心脑或活动的器官,以适应全身血液分配的需要。